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Test Info:
/* Any copyright is dedicated to the Public Domain.
const RELATIVE_DIR = "toolkit/components/pdfjs/test/";
/**
* Get the first and last pixels on the drawn canvas.
* @param {Object} browser
* @returns {Object}
*/
async function getFirstLastPixels(browser) {
return SpecialPowers.spawn(browser, [], async function () {
const { document } = content;
const canvas = document.querySelector("canvas");
Assert.ok(!!canvas, "We must have a canvas");
const data = Array.from(
canvas.getContext("2d").getImageData(0, 0, canvas.width, canvas.height)
.data
);
return {
first: data.slice(0, 3),
last: data.slice(-4, -1),
};
});
}
/**
* Test that the pdf has the correct color depending on the high contrast mode.
*/
add_task(async function test() {
let mimeService = Cc["@mozilla.org/mime;1"].getService(Ci.nsIMIMEService);
let handlerInfo = mimeService.getFromTypeAndExtension(
"application/pdf",
"pdf"
);
// Make sure pdf.js is the default handler.
is(
handlerInfo.alwaysAskBeforeHandling,
false,
"pdf handler defaults to always-ask is false"
);
is(
handlerInfo.preferredAction,
Ci.nsIHandlerInfo.handleInternally,
"pdf handler defaults to internal"
);
info("Pref action: " + handlerInfo.preferredAction);
await SpecialPowers.pushPrefEnv({
set: [
["browser.display.document_color_use", 0],
["browser.display.background_color", "#ff0000"],
["browser.display.foreground_color", "#00ff00"],
["browser.display.use_system_colors", false],
],
});
await BrowserTestUtils.withNewTab(
{ gBrowser, url: "about:blank" },
async function (browser) {
// check that PDF is opened with internal viewer
await waitForPdfJSCanvas(
browser,
`${TESTROOT}file_pdfjs_hcm.pdf#zoom=800`
);
const { first, last } = await getFirstLastPixels(browser);
// The first pixel must be black and not green.
Assert.deepEqual(first, [0, 0, 0]);
// The last pixel must be white and not red.
Assert.deepEqual(last, [255, 255, 255]);
}
);
// Enable HCM.
await SpecialPowers.pushPrefEnv({
set: [["ui.useAccessibilityTheme", 1]],
});
await BrowserTestUtils.withNewTab(
{ gBrowser, url: "about:blank" },
async function (browser) {
// check that PDF is opened with internal viewer
await waitForPdfJSCanvas(
browser,
`${TESTROOT}file_pdfjs_hcm.pdf#zoom=800`
);
const { first, last } = await getFirstLastPixels(browser);
// The first pixel must be green.
Assert.deepEqual(first, [0, 255, 0]);
// The last pixel must be red.
Assert.deepEqual(last, [255, 0, 0]);
}
);
});